Merge branch 'stable/0.11.z' into prod/pa1ch/0.11.zv0.11.1-pa1ch

1 files changed, 5 insertions, 3 deletions

diff --git a/models.py b/models.py
index 3af1c06..0804a38 100644
--- a/models.py
+++ b/models.py
@@ -71,7 +71,7 @@ class Timetable(SlugModel):
 
 class GroupManager(Manager):
     def get_parents(self, group):
-        groups_criteria = Q(subgroup__isnull=True) | Q(subgroup__startswith=group.subgroup) | \
+        groups_criteria = Q(subgroup="") | Q(subgroup__startswith=group.subgroup) | \
                           reduce(lambda x, y: x | y,
                                  [Q(subgroup=group.subgroup[:i])
                                   for i in range(1, len(group.subgroup) + 1)])
@@ -99,8 +99,7 @@ class Group(models.Model):
                                   verbose_name="emploi du temps")
 
     mention = models.CharField(max_length=128)
-    subgroup = models.CharField(max_length=16, verbose_name="sous-groupe",
-                                null=True)
+    subgroup = models.CharField(max_length=16, verbose_name="sous-groupe", default="")
 
     slug = models.SlugField(max_length=64, default="")
 
@@ -129,6 +128,9 @@ class Group(models.Model):
             self.slug = slugify(self.name)
 
         self.mention, self.subgroup = parse_group(self.name)
+        if self.subgroup is None:
+            self.subgroup = ""
+
         super(Group, self).save()